亚单元蛋白CD40.SARS.CoV2疫苗诱导SARS-CoV-2特定的干细胞类记忆CD8+T细胞
Laury Nguema1, Florence Picard1, Marwa El Hajj1
1Vaccine Research Institute, Université Paris-Est Créteil, Faculté de Médecine, INSERM U955, Team 16, Créteil, France.
EBioMedicine
|December 12, 2024
概括
一种新的CD40.CoV2疫苗通过产生类似干细胞的记忆CD8+T细胞,引起了长期的T细胞免疫力. 这种子单位疫苗方法提供了一种有前途的策略,用于对抗COVID-19的持久保护.
科学领域:
- 免疫学 免疫学 免疫学
- 疫苗学 疫苗学 疫苗学
- 传染性疾病 传染性疾病
背景情况:
- 目前的COVID-19 mRNA疫苗主要向尖端蛋白,诱导随着时间的推移减弱的抗体.
- 需要疫苗来诱导持久的细胞和幽默免疫力.
研究的目的:
- 评估一种针对尖峰和核囊抗原的新型亚单元疫苗 (CD40.CoV2).
- 评估疫苗诱导长寿T细胞反应的能力.
主要方法:
- 将CD40.CoV2亚单元疫苗给人性化小鼠使用.
- 对T细胞种群的分析,包括CD4+和CD8+T细胞.
- 描述T细胞的记忆特性和功能.
主要成果:
- CD40.CoV2疫苗接种产生了广泛的人类T细胞反应 (Th1 CD4+和CD8+).
- 该疫苗选择性地丰富了长寿CD8+T细胞原始体,具有干细胞样记忆 (Tscm) 特性.
- CD8+ Tscm细胞表现出高功能性,包括细胞因子的产生和增殖,CD40激活对于它们的产生至关重要.
结论:
- 在CD40.CoV2疫苗平台引起持久的T细胞免疫力.
- 这种方法显示出开发下一代疫苗的潜力,这些疫苗具有持久的保护作用.
更多相关视频
15:57Application of Long-term cultured Interferon-γ Enzyme-linked Immunospot Assay for Assessing Effector and Memory T Cell Responses in Cattle
Published on: July 11, 2015
12.2K
12:43Generation of a Novel Dendritic-cell Vaccine Using Melanoma and Squamous Cancer Stem Cells
Published on: January 6, 2014
11.8K
相关概念视频
01:23Immunological Memory
530
Immunological memory, a pivotal pillar of the adaptive immune system, is responsible for the body's ability to remember and respond more swiftly and effectively to previously encountered pathogens. This remarkable feature is what makes vaccines so effective in preventing diseases.
What is Immunological Memory?
Immunological memory is an integral function of the immune system that allows it to recognize and react more rapidly and effectively to pathogens previously encountered. This feature...
What is Immunological Memory?
Immunological memory is an integral function of the immune system that allows it to recognize and react more rapidly and effectively to pathogens previously encountered. This feature...
530
01:23Cells of the Adaptive Immune Response
960
The T and B lymphocytes of the adaptive immune system develop from common lymphoid progenitor cells in the bone marrow. These progenitors give rise to precursors that eventually develop into both T and B lymphocytes. As these precursors mature, they gain the ability to detect and respond to foreign antigens in the body, a process known as immunocompetence. Additionally, these precursors acquire self-tolerance, a process that ensures they do not react to self-antigens. This intricate system...
960
01:51Vaccinations
44.1K
Overview
44.1K
01:22T Cell Activation and Clonal Selection
658
T cells are integral to our adaptive immune system, recognizing and effectively responding to foreign antigens. T cell activation and clonal selection are pivotal in orchestrating this immune response. This article elucidates these mechanisms, detailing the roles of cluster of differentiation (CD) markers, major histocompatibility complex (MHC) molecules, costimulatory signals, and the process of clonal selection.
Naive T cells that have not yet encountered an antigen express two primary CD...
Naive T cells that have not yet encountered an antigen express two primary CD...
658
01:29Immune Response Against Viral Pathogens
748
The immune system's response to viral infections is a complex and coordinated process involving natural killer (NK) cells, T cell-mediated responses, and antibody-mediated responses.
NK Cells
NK cells are a crucial part of our innate immune system, acting as the first line of defense against viral infections. These cells can recognize and kill infected cells without prior exposure to the virus, effectively slowing down the spread of infection. Additionally, NK cells produce proinflammatory...
NK Cells
NK cells are a crucial part of our innate immune system, acting as the first line of defense against viral infections. These cells can recognize and kill infected cells without prior exposure to the virus, effectively slowing down the spread of infection. Additionally, NK cells produce proinflammatory...
748
01:40Cell-mediated Immune Responses
67.0K
Overview
67.0K